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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
branch_office
Jul. 04, 2014
Business Acquisition [Line Items]    
Number of branches provided with financial services 73crfn_NumberofBranchesProvidedwithFinancialServices  
Vantagesouth Bancshares, Inc. | Yadkin Financial Corporation    
Business Acquisition [Line Items]    
Stock exchange ratio   0.3125crfn_BusinessCombinationConversionofStockConversionRatio
/ us-gaap_BusinessAcquisitionAxis
= crfn_YadkinFinancialCorporationMember
/ dei_LegalEntityAxis
= crfn_VantagesouthBancsharesInc.Member
Piedmont Community Bank Holdings Inc | Yadkin Financial Corporation    
Business Acquisition [Line Items]    
Stock exchange ratio   6.28597crfn_BusinessCombinationConversionofStockConversionRatio
/ us-gaap_BusinessAcquisitionAxis
= crfn_YadkinFinancialCorporationMember
/ dei_LegalEntityAxis
= crfn_PiedmontCommunityBankHoldingsIncMember
Cash received per share   6.6878crfn_BusinessCombinationCashReceivedPerShare
/ us-gaap_BusinessAcquisitionAxis
= crfn_YadkinFinancialCorporationMember
/ dei_LegalEntityAxis
= crfn_PiedmontCommunityBankHoldingsIncMember